# DAY/DYDD/GIORNO/NAP 345: The Main Challenge

A gentle logic puzzle for all members of the family to try.

Can you correctly insert the numbers 1-9, once each, into the 3-by-3 grid when following the rules below?

x              x               x

x              x               x

x              x               x

The six rules are:

• 1 is in the top right-hand corner
• 3 and 8 are also in the top row
• 2 is on the left-hand side of the middle row,
• 4 and 6 are both in the bottom row
• 8 and 7 are in the left-hand column
• 6 and 9 are in the right-hand column The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 1st & 6th columns contain the following fourteen numbers:

7   13   21   22   27   30   36   40   49   54   55   56   60   64

Find three pairs of numbers that each total 43. The Factors Challenge

Which FOUR numbers below are factors of 345?

3    5    7    9    11    13    15    17    19    21    23    25 The Mathematically Possible Challenge

Using 13 and once each, with + – × ÷ available, which FIVE numbers is it possible to make from the list below?

4    8    12    16    20    24    28    32    36    40

#4TimesTable The Target Challenge

Can you arrive at 345 by inserting 5, 10, 15, 20 and 25 into the gaps on each line below?

•  (+÷√◯)×(◯+◯) = 345
•  (+◯)×◯–◯÷◯ = 345   